US1925785A - Window regulator - Google Patents

Description

p 1933- E. L. ACKERMAN ET AL 1,925,735

WINDOW REGULATOR Filed June 19, 1930 2 Sheets-Sheet 1 ATTORNEY.

Se t. 5, 1933. E. ACKERMAN ET AL 1,925,735

WINDOW REGULATOR Filed June 19. 1950 2 Sheets-Sheet 2 A if A TTORNE Y.

Patented Sept. 5, 1933 UNITED STATES 1,925,785 WINDOW REGULATOR.-

Edward L. Ackerman and Alois J. Zwierzina, Detroit, Mich, assignors to Ackerman-Blaesser- Fezzey, Inc., Detroit, Mich., a corporation of Michigan Application June 19, 1930. Serial No. 462,346 40mins. (01. 268-126) This invention relates to window regulators and the object of the invention is to provide a regulator for raising and lowering the-windows of an automobile body and arranged to lift the window from a determined point preferably past the center of the lower edge.

Another object of the invention is to provide a lifting arm pivotally connected at one end to the window and at the opposite end to a swinging arm, the raising and lowering means being pivotally connected and an actuating arm -.piv-,

otally connected to the lifting arm adjacent the swinging arm and gear operated means for raising and lowering the actuating arm. I

Another object of the invention is to provide a device of the character described which will firmly supportthe window at any position and. which is compact in form and may :be readily installed in a relatively small space. I

These objects and the several novel features of the invention are hereinafter more fully described and claimed and thepreferred form of construction by which these objects are attained is shown in the accompanying drawings inwhich- Fig. 1 is an elevation of a window regulator embodying our invention.

Fig. 2 isa view taken from the bottom of Fig. 1. Fig. 3 is a section taken on line 3'3 of Fig. 1. Fig. 4 is a section taken on line 4-4of Fig. 1. Fig. 5 is a front elevation of an alternative form of the device. v

a Fig. 6 is a side elevation thereof.

As shown in Figs. 1 and 2 a sheet metal plate 1 is provided which is adapted to be attached by means of the screw holes'2 to a frame member beneath the window opening. A housing 3 is secured to the plate 1 and a shaft 4 is rotatably mounted therein to which a crank may be attached forrotating the said shaft. Within'the housing 3 is a gear 5 adapted to be rotated by the shaft 4 and the lower flan e of the housing 3 is provided with a raised portion 6 through which the edge of the gear 5 extends into'mesh-with the large gear 7. The plate 1 is formed to provide a vertical channel 8 having a depression 5 9 extending from one side thereof. Within this depression is a pinion 10 which is secured to turn with the large gear I. Movable vertically in the channel 8 is a gear rack 11 which meshes with the pinion 10. The channel 8 is provided with a slot 12 opening through the bottom thereof anda pin 13 is secured in the rack 11 and extends through the slot 12. An actuating arm 14 is pivotally mounted on the pin 13 and at the lower end carries a pin 15 secured thereto which extends through an aperture provided therefor in the lifting arm 16.

The pin 15 which is secured to the arm 14'is provided with a slot as shown in Fig. 1 to receive the end of a flat helical spring 17 which is pro vided with an end 18 engaging about a pin 19 mounted in the lifting arm 16. A swinging arm 20 is pivotally mounted on the plate 1 at 21 and this arm is provided with a pin 22 extending through an arcuate slot 23 in the plate 1 which limits swinging movement of said arm 20. At the lower end, the swinging arm 20 is pivotally connected to the end of the lifting arm 16 at 24, and-the opposite'end of the lifting arm 16 is pivotally connected at 25 to a bracket 26 which is secured to the window sash 27'directly beneath the center of the window. This arrangement provides a pivot point for the lifting arm that is fixed relative to the sash and the lifting arm therefore constantly applies the push vor pull force at the mechanically correct point and thus avoids a tendency of tilting of the sash in its frame and consequent binding thereof in the operation of raising or lowering the sash.

The operation of the device will be understood more particularly fromFig. 1. From this view, it will be noted that counter-clockwise rotation of the shaft 4,and gear 5 will produce clockwise rotation of the gear 7 and pinion 10 thus'moving the gear track 11 downwardly and'moving the pivot 13 of the arm 14 from position 1a to position 2a. This movement moves the lower end of the arm 14 from position 11) to position 2b. This movement of the arm 14 also moves the pivot 24 of the swinging arm 20 from position 10 to position 20 and moves :the lifting. end of the lifting arm 16 from position 1d to position 2d thus lower ing the sash 2'7 and window mounted therein.

To raise the window, the shaft 4 and gear 5 are rotated in a clockwise direction thus rotating the gear 7 and pinion 10 in a counter-clockwise direction to raise the rack 11. The pivot points of the several arms will then be moved back through positions 1a, 1b, 1c and 1d to positions 3a, 3b, 3c and 3d in which position the window is closed. This clockwise rotation of the shaft 4 and gear 5 may be continued to move the pivot window and this spring being under tension assists in raising the lifting arm and window as the window is moved upwardly. The housing 3 for the shaft 4 and gear; 5 preferably contains.

a clutch mechanism for holding the gear 5 at any adjustment upon release of the crank whichv is attached to the shaft 4. This clutch mechanism may be constructed as shown and described in detail in the U. S. Patent No. 1,657,561, issued January 31, 1928 but is not here shown as it is not absolutely essential to the operation of this device.

Analternative form of the device is'shown in Figs. 5 and 6 and comprises a plate 30 having a casing 3 secured thereto in which a shaft 4 and gear 5 is rotatably mounted. The gear 5 meshes with a large gear 31 to which a small gear 32 is secured.

The gear 32 meshes with the large gear 33 'whichcarries a pin 34 and which is rotatably mounted in the plate 30. The pin '34 extends through the plate 30 and is slotted to receive the end 35 of a helical spring 36 and a stationary pin 3'7 is mounted on the plate as and the opposite end of the spring 36 is secured to said pin 3'7. The spring 36 resists rotation of the gear 33 in a clockwise direction and assists rotation of the gear 33 in a counter-clockwise direction. The

gear 33 is provided with teeth through about one-half of its circumference and on the side of the gear opposite the teeth a lug 38 is provided to which the arm 1 l is secured. The arm 14 is substantially the same as the arm 14 shown in Fig. 1 and is pivotally connected at the lower end to the lifting arm 16. Thearm 20 is also the same as the arm 20 shown in Fig. l and is provided with a pin 22 riding in the arcuate slot 23 in the plate 30. In this form of the device, the gear 33 may be turned through a half-circle to move the pivot point of the arm 14 in the lug 38 to positions la, 2a, 3a and 4a which produces substantially the same movements of the arms 14, 16 and 20 as the gear rack 11 shown'in Fig.

1. The essential difierences between the device shown in Fig. 5 andthat shown in Fig. 1 is that the gear 33 is substituted for the gear rack 11 shown in Fig. 1 and the spring 36'assists in countier-clockwise movement of the gear 33 to raise the arms 14 and 16 and resists clockwise movement of the gear 33 to lower the arms 14 and 16.

From the foregoing description it becomes evident that the device is very simple and efiicient in operation, will not easily get out of order, is 1 composed of few parts and is of consequent low manufacturing cost and provides a devicewhich accomplishes the objects described.

actuating arm pivotally mounted on said pivot pin, a swinging arm pivotally mounted on the plate, a lifting arm pivoted in the other end of the swinging arm and adapted for pivotal con- :nection with a window sash, the other end of the actuating arm being pivotally connected to the lifting arm adjacent its pivotal connection with the swinging arm, crank operated means for moving the gear rack longitudinally of the ohannel in either direction, and yieldable means resisting downward movement of the lifting arm by the actuating arm, said yieldable means assisting in upward movement of the lifting arm by the actuating arm.

2. In a window regulator, a sheet metal plate, an arm pivotally mounted on the plate to swing through a limited arc, a lifting arm pivotally connected to the end of the swinging arm, the other end of the lifting arm being adapted for pivotal connection with a window sash, an actuating arm pivotally connected to the lifting arm adjacent the swinging arm, the plate being formed to provide a vertical channel, a gear rack movable longitudinally in said channel, the'actuating arm being pivotally mounted on the gear rack, and a'crank operated gear mechanismfor moving the gear rack longitudinally in either direction.

3.'In a window regulator, a plate, an arm pivotally mounted on the plate to swing through a limited are, a lifting arm pivotally connected 'to the end of the swinging arm, the other end of the lifting arm beingv pivotally connected to a window sash, an actuating arm pivoted at one end to the lifting arm, a gear rack movable verholding the rack to move it in a straight line, and a gear mechanism for raising and lowering the gear rack.

tically on the plate, the other end of the actu- 'ating arm being pivoted to said rack, means for 4. Ina window regulatorfa plate having an arcuate slot, an arm pivoted to swing on the plate and having a pin riding in the slot, a lifting arm having one end pivotally connected to the end of the pivoted arm, the other end being line to which the other end of the actuating arm is pivoted, and a fixedly positioned gear for moving the rack to raise or lower the actuating arm.

Images